So I tried this context which at first glance exactly what was expected. However, this framework was not designed for Gorpro Hero 4. For one reason, one of the two frame holes for microphones is not the right place and it will prevent you to gain maximum benefit from its expected, however it's still pretty good (that c ' Thanks to the Gopro not at that part ...). For the second reason, pierces the top, to be able to press the "record" is too small and it will then remain switched on and it will actually prevent you turn on your GoPro and when you have managed to turn this constant pressure will do that every movement your GoPro will begin to save, then cut, then record, etc ... And this also applies to the button settings in the GoPro ... I quickly solved this problem by taking a pair of scissors and I scraped the outline of the holes to be able to expand more.
Remember that this is not a GoPro product and its price shows that it has not undergone any verification test, while for those with a GP 4 I suggest you put ten euros more in Gopro an actual product because I fear for the life of the product since it's a low-end flexible plastic enough ...